Wikipedia
Special library
A special library is a library that provides specialized information resources on a particular subject, serves a specialized and limited clientele, and delivers specialized services to that clientele. Special libraries include corporate libraries, government libraries, law libraries, medical libraries, museum libraries, news libraries, and nonprofit libraries. Special libraries also exist within academic institutions, including law school libraries and medical school libraries. These libraries are included as special libraries because they are often funded separately from the rest of the university and they serve a targeted groups of users.